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| Thread ID: 115876 | 2011-02-07 11:06:00 | Viewsonic Monitor Problem | bk T (215) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 1176074 | 2011-02-18 10:11:00 | Actually it's funny you should say that, I'm having a problem with one of my monitors and currently I suspect a capacitor array in the button circuit to be shorted, which makes it appear to the monitor as if the button is stuck down. I am going to replace the array when I get some more supplies and hopefully that will fix it... |
Agent_24 (57) | ||
| 1176075 | 2011-02-18 10:17:00 | If u buy em by the 100 you getta good discount? ;) I'm no expert but I can't see a capacitor causing that sort of problem. More likely to be an IC fault, or the switch open/shorted. As I said, I'm no expert |
Phil B (648) | ||
| 1176076 | 2011-02-18 10:33:00 | Probably but it was cheaper to buy just a pack of 5... The circuit for the buttons is shown attached. There are 6 identical circuits, one for each button. Since the capacitor is in parallel with the switch, any short circuit of this would simulate a button press. In-circuit testing showed that this is quite likely the problem. |
Agent_24 (57) | ||
| 1176077 | 2011-02-18 10:45:00 | To my way of thinking, the capacitor is there to protect the IC & eliminate any possible spike created when the switch is pressed. Put a test meter across the capacitor legs & see if there's a dead short. Some meters also have a capacitance test. I'm one of these people that knows enough to be dangerous :devil Normally in my line of work, if it's not a simple fix & you can bash it with a big hammer, bash it. Or take it to someone who can do it properly. I'd advise the latter with a monitor | Phil B (648) | ||
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